Washbasin



FIG. 1 is a plan view of a washbasin;

FIG. 2 is a front view of the washbasin of FIG. 1;

FIG. 3 is a side view of the washbasin of FIG. 1;

FIG. 4 is a first perspective top plan view of the washbasin of FIG. 1; and,

FIG. 5 is a second perspective view of the washbasin of FIG. 1. 

The ornamental design for a washbasin, as shown and described. 